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Explain the Sub-Culturing?
Microbiological studies require microorganisms in pure form, i.e., a single type of microorganisms should be present in a culture. Maintenance of these pure cultures in laboratory is must. Preparation and maintenance of these pure cultures can be achieved by transfer of culture from one medium to another or from their parent growth source to another. The procedure is called sub-culturing. This technique is of basic importance and should be carried out by practicing aseptic technique. The term picking off is used when transfer is made from solid to liquid media.
Define the Toxicity of Vitamin B 12 ? Intake of 1000 μg vitamin B 12 has never been reported to have any side-effects. Similar large amounts have been used in some preparati
Q. During mitotic anaphase is there separation of identical chromatids or separation of homologous chromosomes? In the anaphase of mitosis the identical chromatids complete and
Antibodies Antibodies are important.tools for detecting and localising specific molecules in the cells due to their high specificity. The first requirement for this is to produ
skeleton of protozoans
Is fecundation in amphibians external or internal? In this aspect are amphibians evolutionarily proximal to fishes or to reptiles? In the majority of the amphibian species fec
Define Metabolic Activity and Cell Constituents? Metabolic activity like amount of acid produced or CO 2 produced is directly proportional to the number of bacteria present, s
What is genotype? What is the difference between phenotype and genotype? The Genotype is the genes, DNA nucleotide sequences contained in the chromosomes of an individual, whic
Pathphysiology Streptococcal upper respiratory infection leads to production of antibodies. An abnormal immunological response to the upper respiratory infection with Beta- h
living and non living
Q. Use of Sulphur dioxide and sulphites in microorganisms? Sulphur dioxide as a preservative in wine preparation has been in use since ancient times. It is also used in other f
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